[wp-hackers] how to add a second "Write post" subpanel?

[AJ Chen]

I want to add a second write post subpanel that is called "post experiment".
"post experiment" should use the same data flow for "write post".  I add the
submenu in my plugin as follows:
add_submenu_page('post-new.php', 'Write Experment Post', 'Experiment Post',
8, 'exp', 'w2x_show_exp_post');

In the function w2x_show_exp_post(), what's the good way to display the same
write post GUI?
Thanks,
AJ